add -Wundef, fix uncovered bugs
[platform/upstream/busybox.git] / Makefile.flags
1 # ==========================================================================
2 # Build system
3 # ==========================================================================
4
5 BB_VER = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
6
7 CPPFLAGS += \
8         -Iinclude -Ilibbb \
9         $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) -I$(srctree)/libbb \
10         -include include/autoconf.h \
11         -D_GNU_SOURCE -DNDEBUG \
12         $(if $(CONFIG_LFS),-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64) \
13         -D"BB_VER=KBUILD_STR($(BB_VER))" -DBB_BT=AUTOCONF_TIMESTAMP \
14         -Wall -Wstrict-prototypes -Wshadow -Werror -Wundef \
15         -funsigned-char -fno-builtin-strlen -finline-limit=0 -static-libgcc \
16         -Os -falign-functions=1 -falign-jumps=1 -falign-loops=1 \
17         -fomit-frame-pointer -ffunction-sections -fdata-sections